Update tokenizer example in README to @tokenizer/http v0.5.0

[Borewit]

Update example to @tokenizer/http v0.5.0

const {HttpTokenizer} = require('@tokenizer/http');
const FileType = require('file-type');

const config = {
	avoidHeadRequests: true
};

const audioTrackUrl = 'https://test-audio.netlify.com/Various%20Artists%20-%202009%20-%20netBloc%20Vol%2024_%20tiuqottigeloot%20%5BMP3-V2%5D/01%20-%20Diablo%20Swing%20Orchestra%20-%20Heroines.mp3';

(async () => {
	const httpTokenizer = HttpTokenizer.fromUrl(audioTrackUrl, config);
	await httpTokenizer.init();

	const fileType = await FileType.fromTokenizer(httpTokenizer);
	console.log(fileType);
	// { ext: 'mp3', mime: 'audio/mpeg' }
})();

to something like:

const {makeTokenizer} = require('@tokenizer/http');
const FileType = require('file-type');

const config = {
	avoidHeadRequests: true
};

const audioTrackUrl = 'https://test-audio.netlify.com/Various%20Artists%20-%202009%20-%20netBloc%20Vol%2024_%20tiuqottigeloot%20%5BMP3-V2%5D/01%20-%20Diablo%20Swing%20Orchestra%20-%20Heroines.mp3';

(async () => {
	const httpTokenizer = await makeTokenizer(audioTrackUrl, config);
	
	const fileType = await FileType.fromTokenizer(httpTokenizer);
	console.log(fileType);
	// { ext: 'mp3', mime: 'audio/mpeg' }
})();

Pending merge: #285, #286